From: Gavin Shan <gwshan@linux.vnet.ibm.com>
Date: Tue, 30 Sep 2014 02:39:06 +0000 (+1000)
Subject: powerpc/eeh: Tag reset state for user owned PE
X-Git-Tag: firefly_0821_release~176^2~2988^2~63
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=93e8b36d7bf5c54f1c52d8b78e34f88e52a3dfa2;p=firefly-linux-kernel-4.4.55.git

powerpc/eeh: Tag reset state for user owned PE

PE would be owned by userland, which probably request PE reset
done in host side. During the reset, we should drop the PCI
config accesses to the PE with help of flag EEH_PE_RESET.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index eb266f4ee9be..693690827785 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -1463,6 +1463,7 @@ int eeh_pe_reset(struct eeh_pe *pe, int option)
 	switch (option) {
 	case EEH_RESET_DEACTIVATE:
 		ret = eeh_ops->reset(pe, option);
+		eeh_pe_state_clear(pe, EEH_PE_RESET);
 		if (ret)
 			break;
 
@@ -1477,6 +1478,7 @@ int eeh_pe_reset(struct eeh_pe *pe, int option)
 		 */
 		eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE);
 
+		eeh_pe_state_mark(pe, EEH_PE_RESET);
 		ret = eeh_ops->reset(pe, option);
 		break;
 	default: